full copper g1" dn25 size 4 to 45l/min speed pulse water flow sensor hall inductive switch flow meter from factory good quality

the water flow sensor is mainly composed of a copper valve body, a water flow rotor assembly, a steady flow component and a hall element. it is installed at the inlet of the water heater to measure the influent flow. as the water flows through the rotor assembly, the magnetic rotor rotates and the rotational speed changes linearly with the flow rate. the hall element outputs a corresponding pulse signal to the controller, and the controller determines the magnitude of the water flow.